Thyristor switch turn-off control method, circuit and controller

Abstract

The embodiment of the present application provides a thyristor switch turn-off control method, which is applied to a controller of a turn-off control circuit of a thyristor switch, wherein the circuit also includes at least one thyristor switch and a load device; the method obtains multiple identification information and corresponding device position information by parsing a circuit image corresponding to the turn-off control circuit; the multiple identification information is matched with multiple thyristor identifications of a thyristor type library, and the successfully matched thyristor identification is determined as the target thyristor identification; the device position information corresponding to the target thyristor identification is determined as the thyristor position information; the thyristor type corresponding to the circuit image and the target thyristor identification is input into a preset strategy generation model, and the turn-off control of the thyristor switch is completed according to the output thyristor turn-off control strategy and thyristor position information. The method can adaptively determine any number of thyristor switch types and corresponding turn-off control strategies in the circuit, thereby improving the control efficiency of multiple thyristor switches.

Description

Technical Field

[0001] The present application relates to the field of power electronics technology, and in particular to a turn-off control method, circuit and controller for a thyristor switch. Background Art

[0002] Thyristor is a high-power semiconductor device with a four-layer structure and three PN junctions. During operation, the anode (A) and cathode (K) of the thyristor are connected to the power supply and the load to form the main circuit of the thyristor. The gate G and cathode K of the thyristor are connected to the device that controls the thyristor to form the control circuit of the thyristor. Its function is not only rectification, but also can be used as a contactless switch to quickly connect or disconnect the circuit, realize the inversion of direct current into alternating current, and convert one frequency of alternating current into another frequency of alternating current, etc. Thyristors are widely used in electronic circuits such as controlled rectification, AC voltage regulation, contactless electronic switches, inverters and frequency conversion.

[0003] Among them, thyristors can be divided into various types according to their shutdown, conduction and control directions, such as ordinary thyristors, bidirectional thyristors, reverse conducting thyristors, gate turn-off thyristors, temperature-controlled thyristors and light-controlled thyristors. When there are multiple thyristor switches in the circuit at the same time, it is necessary to set a corresponding controller for each thyristor, which leads to a significant increase in the cost and load of the circuit. Summary of the invention

[0004] The present application provides a thyristor switch turn-off control method, circuit and controller, aiming to solve the problem that when there are multiple thyristor switches in the circuit at the same time, a corresponding controller needs to be set for each thyristor, resulting in a significant increase in the cost and load of the circuit. The provided method can adaptively determine the type of any number of thyristor switches in the circuit and the corresponding turn-off control strategy, thereby reducing the cost and load of the circuit and improving the control efficiency of multiple thyristor switches.

[0005] In a first aspect, an embodiment of the present application provides a turn-off control method for a thyristor switch, which is applied to a controller of a turn-off control circuit of a thyristor switch, wherein the turn-off control circuit of the thyristor switch further comprises at least one thyristor switch and a load device, wherein the thyristor switch and the load device are electrically connected, and the controller stores a thyristor type library, wherein the thyristor type library comprises a plurality of thyristor types and thyristor identifiers corresponding to the thyristor types; the method comprises:

[0006] Acquire a circuit image corresponding to the shutdown control circuit;

[0007] Analyze the circuit image to obtain multiple identification information and device position information corresponding to the identification information;

[0008] Matching the multiple identification information with multiple thyristor identifications in the thyristor type library, and determining the successfully matched thyristor identification as the target thyristor identification;

[0009] Determine the device position information corresponding to the target thyristor identifier as the thyristor position information;

[0010] Inputting the circuit image and the thyristor type corresponding to the target thyristor identification into a preset strategy generation model, and the strategy generation model outputs a thyristor turn-off control strategy;

[0011] The turn-off control of the thyristor switch is completed according to the thyristor control strategy and the thyristor position information.

[0012] In some embodiments, obtaining a circuit image corresponding to a shutdown control circuit includes: obtaining a circuit diagram file corresponding to the shutdown control circuit; converting the circuit diagram file into a preset image format to obtain a circuit image; or obtaining a circuit image of the shutdown control circuit taken by a preset image acquisition device, wherein the image acquisition device is set toward the shutdown control circuit.

[0013] In some embodiments, a circuit image is parsed to obtain multiple identification information and device location information corresponding to the identification information, including: performing text recognition on the circuit image to obtain multiple identification information; in the circuit image, determining an area within a preset range for each identification information as a device detection area; performing target detection on each device detection area to obtain device location information corresponding to a successfully detected device detection area; and outputting the successfully detected device location information and the corresponding identification information.

[0014] In some embodiments, before determining the device location information corresponding to the target thyristor identification as the thyristor location information, it also includes: determining the identification information that fails to match as load identification information, parsing the load identification information to obtain load parameters; inputting the circuit image and the thyristor type corresponding to the target thyristor identification into a preset strategy generation model, and the strategy generation model outputs a thyristor turn-off control strategy, including: inputting the circuit image, the thyristor type and the load parameters into a preset strategy generation model, and the strategy generation model outputs a thyristor turn-off control strategy.

[0015] In some embodiments, the strategy generation model stores a standard circuit image library, the standard circuit image library includes multiple standard circuit images, a preset thyristor type corresponding to each standard circuit image, and a standard thyristor control strategy corresponding to each standard circuit image; the strategy generation model outputs a thyristor turn-off control strategy, including: the strategy generation model calculates the image similarity between the circuit image and each standard circuit image, and calculates the type similarity between the thyristor type and the preset thyristor type; determines a target circuit image among multiple standard circuit images according to the image similarities and type similarities corresponding to the multiple standard circuit images; and outputs the standard thyristor control strategy corresponding to the target circuit image as the thyristor turn-off control strategy.

[0016] Exemplarily, the strategy generation model calculates the image similarity between the circuit image and each standard circuit image, and calculates the type similarity between the thyristor type and the type corresponding to the preset thyristor type, including: the strategy generation model parses the circuit image and the standard circuit image according to multiple preset feature point types, and obtains the feature points of the circuit image corresponding to each preset feature point type and the feature points of the standard circuit image; the strategy generation model calculates the image similarity in a preset image similarity formula according to the feature points of the circuit image corresponding to the multiple preset feature point types and the feature points of the standard circuit image, and the image similarity formula is:

[0017] Among them, S image (,) is the image similarity, I c is the circuit image, I S is a standard circuit image, N is the number of preset feature point types, and w i is the weight of the i-th preset feature point type, f c，i is the feature vector of the i-th feature point of the circuit image, f s，i is the feature vector of the i-th feature point of the standard circuit image, sim(,) is the feature vector similarity; the strategy generation model calculates the type similarity between the thyristor type and the preset thyristor type according to the preset type similarity formula, and the type similarity formula includes:

[0018] Among them, S type (,) is the type similarity, T c The thyristor type of the circuit image, T S is the preset thyristor type corresponding to the standard circuit image, M is the number of preset thyristor types corresponding to the standard circuit image, v j is the weight of the jth preset thyristor type, t c is the encoding vector of the thyristor type of the circuit image, t s，j is the encoding vector of the i-th preset thyristor type corresponding to the standard circuit image, and δ(,) is the encoding vector similarity.

[0019] In some embodiments, the control strategy includes a thyristor type and a control parameter; the shutdown control of the thyristor switch is completed according to the thyristor control strategy and the thyristor position information, including: if the thyristor type is an ordinary thyristor, a bidirectional thyristor, a reverse conducting thyristor or a gate-turn-off thyristor, the thyristor position information is connected to the gate of the thyristor switch, and the shutdown control of the thyristor switch is completed according to the control parameters; if the thyristor type is a temperature-controlled thyristor, a preset temperature adjustment device is controlled to adjust the temperature of the thyristor switch according to the control parameters and the thyristor position, and the shutdown control of the thyristor switch is completed; if the thyristor type is a light-controlled thyristor, a preset light intensity adjustment device is controlled to adjust the light intensity of the thyristor switch according to the control parameters and the thyristor position, and the shutdown control of the thyristor switch is completed.

[0020] In some embodiments, after completing the shutdown control of the thyristor switch according to the thyristor control strategy and the thyristor position information, it also includes: obtaining infrared image information corresponding to the shutdown control circuit; obtaining temperature information of the thyristor switch in the infrared image information according to the thyristor position information; when it is determined that the thyristor switch is overheated according to the temperature information, the thyristor switch is controlled to be disconnected, and the temperature information, circuit image and thyristor type are input into a preset strategy generation model to update the thyristor shutdown control strategy; and completing the shutdown control of the thyristor switch according to the updated thyristor shutdown control strategy.

[0021] In a second aspect, an embodiment of the present application provides a shutdown control circuit, comprising: at least one thyristor switch; a load device, the load device being electrically connected to the thyristor switch; a controller, the controller storing a thyristor type library, the thyristor type library comprising a plurality of thyristor types and thyristor identifiers corresponding to the thyristor types; wherein the controller obtains a circuit image corresponding to the shutdown control circuit; the controller parses the circuit image to obtain a plurality of identification information and device position information corresponding to the identification information; the controller matches the plurality of identification information with the plurality of thyristor identifiers of the thyristor type library, and determines the successfully matched thyristor identifier as a target thyristor identifier; the controller determines the device position information corresponding to the target thyristor identifier as thyristor position information; the controller inputs the circuit image and the thyristor type corresponding to the target thyristor identifier into a preset strategy generation model, and the strategy generation model outputs a thyristor shutdown control strategy; the controller completes shutdown control of the thyristor switch according to the thyristor control strategy and the thyristor position information.

[0022] In some embodiments, the thyristor switch includes any one of a normal thyristor, a bidirectional thyristor, a reverse conducting thyristor, a gate turn-off thyristor, a temperature controlled thyristor and a light controlled thyristor.

[0023] In a third aspect, an embodiment of the present application provides a shutdown control device, which is applied to a controller of a shutdown control circuit of a thyristor switch, wherein the shutdown control circuit of the thyristor switch further includes at least one thyristor switch and a load device, the thyristor switch and the load device are electrically connected, and the controller stores a thyristor type library, the thyristor type library includes multiple thyristor types and thyristor identifiers corresponding to the thyristor types; including:

[0024] An image acquisition unit, used to acquire a circuit image corresponding to the shutdown control circuit;

[0025] A circuit analysis unit, used for analyzing the circuit image to obtain a plurality of identification information and device position information corresponding to the identification information;

[0026] An identification matching unit, used for matching the multiple identification information with the multiple thyristor identifications of the thyristor type library, and determining the successfully matched thyristor identification as the target thyristor identification;

[0027] A position determination unit, used to determine the device position information corresponding to the target thyristor identifier as the thyristor position information;

[0028] An identification input unit, used for inputting the circuit image and the thyristor type corresponding to the target thyristor identification into a preset strategy generation model, and the strategy generation model outputs a thyristor turn-off control strategy;

[0029] The control completion unit is used to complete the turn-off control of the thyristor switch according to the thyristor control strategy and the thyristor position information.

[0030] In some embodiments, obtaining a circuit image corresponding to a shutdown control circuit includes: obtaining a circuit diagram file corresponding to the shutdown control circuit; converting the circuit diagram file into a preset image format to obtain a circuit image; or obtaining a circuit image of the shutdown control circuit taken by a preset image acquisition device, wherein the image acquisition device is set toward the shutdown control circuit.

[0031] In a fourth aspect, an embodiment of the present application provides a controller, characterized in that the controller includes a memory and a processor; the memory is used to store a computer program; the processor is used to execute the computer program and implement the steps of the thyristor switch turn-off control method provided in any embodiment of the present application when executing the computer program.

[0032] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps of the thyristor switch turn-off control method provided in any embodiment of the present application.

[0033] The embodiment of the present application provides a turn-off control method for a thyristor switch, which is applied to a controller of a turn-off control circuit of a thyristor switch, wherein the turn-off control circuit of the thyristor switch further comprises at least one thyristor switch and a load device, wherein the thyristor switch and the load device are electrically connected, and the controller stores a thyristor type library, wherein the thyristor type library comprises a plurality of thyristor types and thyristor identifiers corresponding to the thyristor types; the method first obtains a circuit image corresponding to the turn-off control circuit; then, parses the circuit image to obtain a plurality of identifier information and device position information corresponding to the identifier information; then, matches the plurality of identifier information with a plurality of thyristor identifiers of the thyristor type library, and determines the thyristor identifier that has been successfully matched as a target thyristor identifier; further, determines the device position information corresponding to the target thyristor identifier as the thyristor position information; further, inputs the circuit image and the thyristor type corresponding to the target thyristor identifier into a preset strategy generation model, and the strategy generation model outputs a thyristor turn-off control strategy; finally, the turn-off control of the thyristor switch is completed according to the thyristor control strategy and the thyristor position information. Furthermore, the provided method can adaptively determine the types of any number of thyristor switches in the circuit and the corresponding turn-off control strategies, thereby reducing the cost and load of the circuit and improving the control efficiency of multiple thyristor switches.

[0034] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the structure of a shutdown control circuit shown in an embodiment of the present application;

[0036] Figure 2 A schematic flow chart of a method for controlling the turn-off of a thyristor switch according to an embodiment of the present application;

[0037] Figure 3 This is a schematic diagram of the structure of a shutdown control device shown in an embodiment of the present application;

[0038] Figure 4 This is a schematic diagram of the structure of a controller shown in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0040] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0041] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0042] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0043] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0044] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0045] The technical solution of the embodiment of the present application is introduced below.

[0046] Thyristor is a high-power semiconductor device with a four-layer structure and three PN junctions. During operation, the anode (A) and cathode (K) of the thyristor are connected to the power supply and the load to form the main circuit of the thyristor. The gate G and cathode K of the thyristor are connected to the device that controls the thyristor to form the control circuit of the thyristor. Its function is not only rectification, but also can be used as a contactless switch to quickly connect or disconnect the circuit, realize the inversion of direct current into alternating current, and convert one frequency of alternating current into another frequency of alternating current, etc. Thyristors are widely used in electronic circuits such as controlled rectification, AC voltage regulation, contactless electronic switches, inverters and frequency conversion.

[0047] Among them, thyristors can be divided into various types according to their shutdown, conduction and control directions, such as ordinary thyristors, bidirectional thyristors, reverse conducting thyristors, gate turn-off thyristors, temperature-controlled thyristors and light-controlled thyristors. When there are multiple thyristor switches in the circuit at the same time, it is necessary to set a corresponding controller for each thyristor, which leads to a significant increase in the cost and load of the circuit.

[0048] To solve the above problems, please refer to Figure 1 , Figure 1 Schematic diagram of the structure of the shutdown control circuit provided in the embodiment of the present application. Figure 1 As shown, the provided shutdown control circuit 10 includes a controller 11, at least one thyristor switch 12 and a load device 13. The load device 13 is electrically connected to the thyristor switch 12; the controller 11 stores a thyristor type library, which includes multiple thyristor types and thyristor identifiers corresponding to the thyristor types.

[0049] Among them, the controller 11 obtains a circuit image corresponding to the shutdown control circuit 10; the controller 11 parses the circuit image to obtain multiple identification information and device position information corresponding to the identification information; the controller 11 matches the multiple identification information with multiple thyristor identifications of the thyristor type library, and determines the successfully matched thyristor identification as the target thyristor identification; the controller 11 determines the device position information corresponding to the target thyristor identification as the thyristor position information; the controller 11 inputs the circuit image and the thyristor type corresponding to the target thyristor identification into a preset strategy generation model, and the strategy generation model outputs a thyristor shutdown control strategy; the controller 11 completes the shutdown control of the thyristor switch 12 according to the thyristor control strategy and the thyristor position information.

[0050] In some embodiments, the controller 11 includes but is not limited to a microcontroller unit (MCU). The controller 11 provided can implement the steps of the shutdown control method provided in any embodiment of the present application.

[0051] In some embodiments, the present application does not limit the type of the thyristor switch 12. No matter there are one or more, or one or more types of thyristor switches 12 in the shutdown control circuit 10, the controller 11 can complete the shutdown control thereof.

[0052] Exemplarily, the thyristor switch 12 includes any one of a common thyristor, a bidirectional thyristor, a reverse-conducting thyristor, a gate-off thyristor, a temperature-controlled thyristor, and a light-controlled thyristor. When the thyristor switch 12 is a common thyristor, a bidirectional thyristor, a reverse-conducting thyristor, or a gate-off thyristor, the controller 11 needs to be electrically connected to the gate of the thyristor switch 12. When the thyristor switch 12 is a temperature-controlled thyristor and a light-controlled thyristor, the thyristor switch controls the temperature-controlled thyristor and the light-controlled thyristor respectively by controlling a preset temperature regulating device or a light intensity regulating device. Thus, the provided solution can adapt to various types of thyristor switches, greatly improving the adaptability of the circuit.

[0053] It should be noted that the embodiment of the present application does not limit the number and type of the thyristor switches 12 in the shutdown control circuit 10. The method provided by the simple / complex circuit can determine the precise control of the thyristor switches 12 in the circuit.

[0054] Please refer to Figure 2 .like Figure 2 The turn-off control method of the thyristor switch of the embodiment of the present application can be applied to Figure 1 The controller of the shutdown control circuit shown in the figure includes but is not limited to a microcontroller unit (MCU). Figure 1 As shown, the turn-off control method of the thyristor switch of this embodiment includes steps S201 to S206, which are described in detail as follows:

[0055] Step S201, obtaining a circuit image corresponding to a shutdown control circuit.

[0056] Specifically, when the controller determines the control strategy for the thyristor switch in the shutdown control circuit, it is necessary to first obtain a circuit image that can characterize the entire shutdown control circuit, especially the thyristor switch. The circuit image can be a circuit connection diagram or a schematic diagram drawn using drawing software, or a physical image obtained by taking a corresponding camera. The embodiment of the present application does not limit the type of circuit image.

[0057] In some embodiments, obtaining a circuit image corresponding to the shutdown control circuit includes: obtaining a circuit diagram file corresponding to the shutdown control circuit; and converting the circuit diagram file into a preset image format to obtain the circuit image.

[0058] Since the circuit diagram files drawn by different drawing software may be different, in order to ensure that the controller can smoothly read the corresponding circuit image, the embodiment of the present application converts the circuit diagram file into a preset image format, such as pdf, jpg and other general image formats, so that the controller can quickly obtain the circuit image corresponding to the shutdown control circuit.

[0059] In some embodiments, obtaining a circuit image corresponding to the shutdown control circuit includes: obtaining a circuit image of the shutdown control circuit photographed by a preset image acquisition device, wherein the image acquisition device is set toward the shutdown control circuit.

[0060] By setting the preset image acquisition device toward the shutdown control circuit, an image of the circuit including the thyristor switch can be captured and sent to the controller, so that the controller can quickly determine the type of the thyristor switch.

[0061] Step S202: parsing the circuit image to obtain a plurality of identification information and device position information corresponding to the identification information.

[0062] Specifically, the controller analyzes the circuit image, such as obtaining character information in the circuit image, and after determining that the character information is identification information corresponding to the electrical component, obtains the device position information corresponding to the identification information in the circuit image, thereby quickly completing the analysis of the structure of the shutdown control circuit.

[0063] In some embodiments, a circuit image is parsed to obtain multiple identification information and device location information corresponding to the identification information, including: performing text recognition on the circuit image to obtain multiple identification information; in the circuit image, determining an area within a preset range for each identification information as a device detection area; performing target detection on each device detection area to obtain device location information corresponding to a successfully detected device detection area; and outputting the successfully detected device location information and the corresponding identification information.

[0064] The controller obtains multiple identification information by performing text recognition on the circuit image, but each identification information is not necessarily the identification information of the original device. Therefore, this application determines a preset range as the device detection area according to the size of the circuit image. Then, target detection is performed on the device detection area of ​​each identification information, and the location information of the successfully detected device and the corresponding identification information are output. In this way, the filtering of multiple identification information is completed to ensure that the device status of the circuit image can be accurately confirmed.

[0065] Step S203 , matching the plurality of identification information with the plurality of thyristor identifications in the thyristor type library, and determining the successfully matched thyristor identification as the target thyristor identification.

[0066] Specifically, the controller can quickly determine the target thyristor identification corresponding to the identification information of the thyristor switch of the shutdown control circuit by matching the identification information with multiple thyristor identifications of the pre-stored thyristor type library, and then quickly confirm the type of the thyristor switch of the shutdown control circuit, so as to ensure that accurate control can be provided for different types of thyristor switches.

[0067] Step S204: determining the device position information corresponding to the target thyristor identifier as the thyristor position information.

[0068] Specifically, after determining the type of the thyristor switch of the turn-off control circuit, the target thyristor identifier of the thyristor is used to confirm the thyristor position information in the plurality of device position information acquired in step S202, thereby clarifying the control object corresponding to the controller.

[0069] Step S205 , inputting the circuit image and the thyristor type corresponding to the target thyristor identification into a preset strategy generation model, and the strategy generation model outputs a thyristor turn-off control strategy.

[0070] Specifically, by inputting the acquired circuit image and the thyristor type corresponding to the target thyristor identification into a preset strategy generation model, the strategy generation model can be a preset convolutional neural network model, which can then parse the layout of the circuit image and determine the control strategy for the thyristor switch of the shutdown control circuit according to the thyristor type therein.

[0071] In some embodiments, the strategy generation model stores a standard circuit image library, the standard circuit image library includes multiple standard circuit images, a preset thyristor type corresponding to each standard circuit image, and a standard thyristor control strategy corresponding to each standard circuit image; the strategy generation model outputs a thyristor turn-off control strategy, including: the strategy generation model calculates the image similarity between the circuit image and each standard circuit image, and calculates the type similarity between the thyristor type and the preset thyristor type; determines a target circuit image among multiple standard circuit images according to the image similarities and type similarities corresponding to the multiple standard circuit images; and outputs the standard thyristor control strategy corresponding to the target circuit image as the thyristor turn-off control strategy.

[0072] In order to improve the accuracy of the thyristor switch control strategy of the present application, a standard circuit image library is constructed by acquiring the standard thyristor control strategies for thyristor switches of preset thyristor types in multiple standard circuit images in the past. Then, the controller can output the corresponding thyristor turn-off control strategies for various circuit types and thyristor switch types in a targeted manner.

[0073] Exemplarily, the strategy generation model calculates the image similarity between the circuit image and each standard circuit image, and calculates the type similarity between the thyristor type and the type corresponding to the preset thyristor type, including: the strategy generation model parses the circuit image and the standard circuit image according to multiple preset feature point types, and obtains the feature points of the circuit image corresponding to each preset feature point type and the feature points of the standard circuit image; the strategy generation model calculates the image similarity in a preset image similarity formula according to the feature points of the circuit image corresponding to the multiple preset feature point types and the feature points of the standard circuit image, and the image similarity formula is:

[0074]

[0075] Among them, S image (,) is the image similarity, I c is the circuit image, I S is a standard circuit image, N is the number of preset feature point types, and w i is the weight of the i-th preset feature point type, f c，i is the feature vector of the i-th feature point of the circuit image, f s，i is the feature vector of the i-th feature point of the standard circuit image, sim(,) is the feature vector similarity; the strategy generation model calculates the type similarity between the thyristor type and the preset thyristor type according to the preset type similarity formula, and the type similarity formula includes:

[0076]

[0077] Among them, S type (,) is the type similarity, T c The thyristor type of the circuit image, T S is the preset thyristor type corresponding to the standard circuit image, M is the number of preset thyristor types corresponding to the standard circuit image, v j is the weight of the jth preset thyristor type, t c is the encoding vector of the thyristor type of the circuit image, t s，j is the encoding vector of the i-th preset thyristor type corresponding to the standard circuit image, and δ(,) is the encoding vector similarity.

[0078] In some embodiments, before determining the device location information corresponding to the target thyristor identification as the thyristor location information, it also includes: determining the identification information that fails to match as load identification information, parsing the load identification information to obtain load parameters; inputting the circuit image and the thyristor type corresponding to the target thyristor identification into a preset strategy generation model, and the strategy generation model outputs a thyristor turn-off control strategy, including: inputting the circuit image, the thyristor type and the load parameters into a preset strategy generation model, and the strategy generation model outputs a thyristor turn-off control strategy.

[0079] At the same time, since there are load devices in addition to thyristor switches in the circuit, the load device logo will be represented by its electrical parameters in the standard circuit diagram, such as the resistance value, rated voltage, etc. By analyzing the parameter information of other load devices in the circuit, the accuracy of thyristor switch control can be further improved.

[0080] Step S206, completing the turn-off control of the thyristor switch according to the thyristor control strategy and the thyristor position information.

[0081] Specifically, after obtaining the thyristor control strategy, the controller can accurately complete the shutdown control of the thyristor switch according to the thyristor position information of the thyristor switch in the shutdown control circuit. The provided method can adaptively determine the types of any number of thyristor switches in the circuit and the corresponding shutdown control strategy, thereby reducing the cost and load of the circuit and improving the control efficiency of multiple thyristor switches.

[0082] In some embodiments, the control strategy includes a thyristor type and a control parameter; the shutdown control of the thyristor switch is completed according to the thyristor control strategy and the thyristor position information, including: if the thyristor type is an ordinary thyristor, a bidirectional thyristor, a reverse conducting thyristor or a gate-turn-off thyristor, the thyristor position information is connected to the gate of the thyristor switch, and the shutdown control of the thyristor switch is completed according to the control parameters; if the thyristor type is a temperature-controlled thyristor, a preset temperature adjustment device is controlled to adjust the temperature of the thyristor switch according to the control parameters and the thyristor position, and the shutdown control of the thyristor switch is completed; if the thyristor type is a light-controlled thyristor, a preset light intensity adjustment device is controlled to adjust the light intensity of the thyristor switch according to the control parameters and the thyristor position, and the shutdown control of the thyristor switch is completed.

[0083] By using different types of thyristor switches, the present application can adopt corresponding control parameters and control methods, and the specific types of control parameters are also set according to the types of thyristor switches, such as frequency, voltage, current, temperature, light intensity, etc. The embodiments of the present application do not limit the types of control parameters. Thus, the control of multiple different thyristor switches can be achieved through one controller.

[0084] In some embodiments, after completing the shutdown control of the thyristor switch according to the thyristor control strategy and the thyristor position information, it also includes: obtaining infrared image information corresponding to the shutdown control circuit; obtaining temperature information of the thyristor switch in the infrared image information according to the thyristor position information; when it is determined that the thyristor switch is overheated according to the temperature information, the thyristor switch is controlled to be disconnected, and the temperature information, circuit image and thyristor type are input into a preset strategy generation model to update the thyristor shutdown control strategy; and completing the shutdown control of the thyristor switch according to the updated thyristor shutdown control strategy.

[0085] By obtaining infrared image information such as that sent by an infrared acquisition device to shut down the control circuit, the controller can ensure that the thyristor switch will not overheat and burn out, and timely warn and update the control strategy. At the same time, the strategy generation model can also optimize the model based on temperature information, thereby improving the safety of the circuit while further improving the control accuracy of the provided method.

[0086] In order to execute Figure 2 The method embodiment shown in the figure corresponds to the thyristor switch turn-off control method to achieve the corresponding functions and technical effects. Figure 3 , Figure 3 FIG. 3 shows a block diagram of a shutdown control device 300 provided in an embodiment of the present application. Figure 1 For ease of description, only the parts related to this embodiment are shown. The shutdown control device 300 provided in the embodiment of the present application includes:

[0087] An image acquisition unit 301 is used to acquire a circuit image corresponding to the shutdown control circuit;

[0088] A circuit analysis unit 302, configured to analyze a circuit image to obtain a plurality of identification information and device position information corresponding to the identification information;

[0089] The identification matching unit 303 is used to match the multiple identification information with the multiple thyristor identifications of the thyristor type library, and determine the thyristor identification that successfully matches as the target thyristor identification;

[0090] A position determination unit 304, configured to determine the device position information corresponding to the target thyristor identifier as the thyristor position information;

[0091] The identification input unit 305 is used to input the thyristor type corresponding to the circuit image and the target thyristor identification into a preset strategy generation model, and the strategy generation model outputs the thyristor turn-off control strategy;

[0092] The control completion unit 306 is used to complete the turn-off control of the thyristor switch according to the thyristor control strategy and the thyristor position information.

[0093] It should be noted that those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described device and each unit can refer to the following. Figure 2 The corresponding process in the provided thyristor switch turn-off control method embodiment will not be described in detail here.

[0094] The above-mentioned device can be implemented in the form of a computer program. Figure 4Runs on the controller shown.

[0095] See also Figure 4 , Figure 4 It is a schematic diagram of the structure of a controller provided in an embodiment of the present application.

[0096] See also Figure 4 The controller includes a processor, a memory, and a network interface connected through a system bus, wherein the memory may include a non-volatile storage medium and an internal memory.

[0097] The non-volatile storage medium can store an operating system and a computer program. The computer program includes program instructions, which, when executed, can cause the processor to perform the following operations: Figure 2 A thyristor switch turn-off control method and any corresponding embodiment thereof are provided.

[0098] The processor is used to provide computing and control capabilities and support the operation of the entire controller.

[0099] The internal memory provides an environment for the operation of the computer program in the non-volatile storage medium. When the computer program is executed by the processor, the processor can execute the following operations: Figure 2 A thyristor switch turn-off control method and any corresponding embodiment thereof are provided.

[0100] The network interface is used for network communication, such as sending assigned tasks, etc. Those skilled in the art will understand that Figure 4 The structure shown in the figure is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the controller to which the scheme of the present application is applied. The specific controller may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0101] It should be understood that the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0102] It should be noted that those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the controller described above can refer to the following. Figure 2 The corresponding process in the provided thyristor switch turn-off control method embodiment will not be described in detail here.

[0103] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0104] An embodiment of the present application provides a computer program product. When the computer program product is run on a computer device, the computer device implements the steps in the above-mentioned method embodiments when executing the computer device.

[0105] In several embodiments provided in the present application, it is understood that each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved.

[0106] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0107] The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the scope of protection of the present application. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A thyristor switch turn-off control method, characterized in that: A controller for a turn-off control circuit of a thyristor switch, wherein the turn-off control circuit of the thyristor switch further comprises at least one thyristor switch and a load device, wherein the thyristor switch and the load device are electrically connected, wherein the controller stores a thyristor type library, wherein the thyristor type library comprises a plurality of thyristor types and thyristor identifiers corresponding to the thyristor types; and wherein the method comprises: Acquire a circuit image corresponding to the shutdown control circuit; Parsing the circuit image to obtain a plurality of identification information and device position information corresponding to the identification information; Matching the plurality of identification information with the plurality of thyristor identifications in the thyristor type library, and determining the thyristor identification with successful matching as the target thyristor identification; Determine the device position information corresponding to the target thyristor identifier as thyristor position information; Inputting the circuit image and the thyristor type corresponding to the target thyristor identifier into a preset strategy generation model, and the strategy generation model outputs a thyristor turn-off control strategy; The turn-off control of the thyristor switch is completed according to the thyristor turn-off control strategy and the thyristor position information.

2. The method according to claim 1, characterized in that: The obtaining of a circuit image corresponding to the shutdown control circuit includes: Obtaining a circuit diagram file corresponding to the shutdown control circuit; Convert the circuit diagram file into a preset image format to obtain the circuit image; or, A circuit image of the shutdown control circuit taken by a preset image acquisition device is acquired, and the image acquisition device is arranged toward the shutdown control circuit.

3. The method according to claim 1, characterized in that The step of parsing the circuit image to obtain a plurality of identification information and device location information corresponding to the identification information includes: Performing text recognition on the circuit image to obtain multiple identification information; In the circuit image, determining an area within a preset range of each identification information as a device detection area; Performing target detection on each of the device detection areas, and obtaining device position information corresponding to the successfully detected device detection area; Output the position information of the successfully detected device and the corresponding identification information.

4. The method according to claim 1, characterized in that: Before determining the device position information corresponding to the target thyristor identifier as the thyristor position information, the method further includes: Determine the identification information that fails to match as load identification information, and parse the load identification information to obtain load parameters; The step of inputting the circuit image and the thyristor type corresponding to the target thyristor identifier into a preset strategy generation model, wherein the strategy generation model outputs a thyristor turn-off control strategy, comprises: The circuit image, the thyristor type and the load parameter are input into a preset strategy generation model, and the strategy generation model outputs a thyristor turn-off control strategy.

5. The method according to claim 1, characterized in that The strategy generation model stores a standard circuit image library, which includes a plurality of standard circuit images, a preset thyristor type corresponding to each of the standard circuit images, and a standard thyristor control strategy corresponding to each of the standard circuit images; The strategy generation model outputs a thyristor turn-off control strategy, including: The strategy generation model calculates the image similarity between the circuit image and each of the standard circuit images, and calculates the type similarity between the thyristor type and the preset thyristor type; Determine a target circuit image among the plurality of standard circuit images according to image similarities and type similarities corresponding to the plurality of standard circuit images; The standard thyristor control strategy corresponding to the target circuit image is output as the thyristor turn-off control strategy.

6. The method according to claim 5, characterized in that The strategy generation model calculates the image similarity between the circuit image and each of the standard circuit images, and calculates the type similarity between the thyristor type and the preset thyristor type, including: The strategy generation model analyzes the circuit image and the standard circuit image according to a plurality of preset feature point types, and obtains feature points of the circuit image and the standard circuit image corresponding to each of the preset feature point types; The strategy generation model calculates the image similarity in a preset image similarity formula according to the feature points of the circuit image corresponding to the plurality of preset feature point types and the feature points of the standard circuit image. The image similarity formula is: Among them, S image (,) is the image similarity, I c is the circuit image, I S is the standard circuit image, N is the number of the preset feature point types, w i is the weight of the i-th preset feature point type, f c，i is the feature vector of the i-th feature point of the circuit image, f s，i is the feature vector of the i-th feature point of the standard circuit image, sim(,) is the feature vector similarity; The strategy generation model calculates the type similarity between the thyristor type and the preset thyristor type according to a preset type similarity formula, and the type similarity formula includes: Among them, S type (,) is the type similarity, T c The thyristor type for the circuit image, T S is the preset thyristor type corresponding to the standard circuit image, M is the number of the preset thyristor types corresponding to the standard circuit image, and v j is the weight of the jth preset thyristor type, t c is the encoding vector of the thyristor type of the circuit image, t s，j is the encoding vector of the i-th preset thyristor type corresponding to the standard circuit image, and δ(,) is the encoding vector similarity.

7. The method according to claim 1, characterized in that The control strategy includes the thyristor type and control parameters; the shut-off control of the thyristor switch is completed according to the thyristor control strategy and the thyristor position information, including: If the thyristor type is a common thyristor, a bidirectional thyristor, a reverse conducting thyristor or a gate-turn-off thyristor, the thyristor switch is connected to the gate of the thyristor switch according to the thyristor position information, and the turn-off control of the thyristor switch is completed according to the control parameter; If the thyristor type is a temperature-controlled thyristor, controlling a preset temperature adjustment device to adjust the temperature of the thyristor switch according to the control parameter and the thyristor position, thereby completing the shutdown control of the thyristor switch; If the thyristor type is a light-controlled thyristor, a preset light intensity adjustment device is controlled to adjust the light intensity of the thyristor switch according to the control parameter and the thyristor position to complete the turn-off control of the thyristor switch.

8. The method according to claim 1, characterized in that After the turn-off control of the thyristor switch is completed according to the thyristor control strategy and the thyristor position information, the method further includes: Acquiring infrared image information corresponding to the shutdown control circuit; Acquire temperature information of the thyristor switch in the infrared image information according to the thyristor position information; When it is determined according to the temperature information that the thyristor switch is overheated, the thyristor switch is controlled to be turned off, and the temperature information, the circuit image and the thyristor type are input into a preset strategy generation model to update the thyristor turn-off control strategy; The turn-off control of the thyristor switch is completed according to the updated thyristor turn-off control strategy.

9. A shutdown control circuit, characterized in that: include: at least one thyristor switch; a load device, the load device being electrically connected to the thyristor switch; A controller, wherein the controller stores a thyristor type library, wherein the thyristor type library includes a plurality of thyristor types and thyristor identifiers corresponding to the thyristor types; Among them, the controller obtains a circuit image corresponding to the shutdown control circuit; the controller parses the circuit image to obtain multiple identification information and device position information corresponding to the identification information; the controller matches the multiple identification information with the multiple thyristor identifications of the thyristor type library, and determines the successfully matched thyristor identification as the target thyristor identification; the controller determines the device position information corresponding to the target thyristor identification as the thyristor position information; the controller inputs the circuit image and the thyristor type corresponding to the target thyristor identification into a preset strategy generation model, and the strategy generation model outputs a thyristor shutdown control strategy; the controller completes the shutdown control of the thyristor switch according to the thyristor shutdown control strategy and the thyristor position information.

10. A controller, characterized in that: The controller includes a memory and a processor; The memory is used to store computer programs; The processor is configured to execute the computer program and implement the steps of the thyristor switch turn-off control method according to any one of claims 1 to 8 when executing the computer program.

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